How can reference the last item in a list in a Django template? {{ list.-1.key }}

Question

if I have a variable in the context of unknown length, for example;
list=[{'key':'A'},{'key':'B'},{'key':'C'}]

How can I get the last object? {{ list.0.key }} works for the first, but {{ list.-1.key }} gives;
Could not parse the remainder: '-1.key' from 'list.-1.key'

Answer 1

Thanks everyone for you help, it lead me to the realisation that I can use the with tag.

{% with list|last as last %}
    {{ last.key }}
{% endwith %}